Shigeru Kasamatsu(笠松 茂,Kasamatsu Shigeru?, born July 16, 1947) is a retired Japanese artistic gymnast. He competed at the 1972 Olympics and won a gold medal with the Japanese team. Individually he won a silver on parallel bars and bronze medals on the floor and horizontal bar. Kasamatsu won six world titles in 1974 and 1978. The Kasamatsu vault is named after him. In 2006 he was inducted into the International Gymnastics Hall of Fame. His wife Kazue Hanyu and son Akihiro Kasamatsu are also retired Olympic gymnasts.
Kasamatsu took up gymnastics in 1957, but had his first major achievement only in 1970, when he finished second all-around in the Chunichi Cup. He had to withdraw from the 1976 Olympics due to an emergency appendectomy.